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Open AccessArticle

Forward Link Optimization for the Design of VHTS Satellite Networks

1
Information Processing and Telecommunications Center, Universidad Politécnica de Madrid, 28040 Madrid, Spain
2
Department of Telecommunications Engineering, Universidad Nacional Autónoma de México, Mexico City 04360, Mexico
3
Agencia Espacia Mexicana (AEM), Mexico City 01020, Mexico
*
Authors to whom correspondence should be addressed.
Electronics 2020, 9(3), 473; https://doi.org/10.3390/electronics9030473
Received: 17 February 2020 / Revised: 6 March 2020 / Accepted: 10 March 2020 / Published: 12 March 2020
(This article belongs to the Section Networks)
The concept of geostationary VHTS (Very High Throughput Satellites) is based on multibeam coverage with intensive frequency and polarization reuse, in addition to the use of larger bandwidths in the feeder links, in order to provide high capacity satellite links at a reduced cost per Gbps in orbit. The dimensioning and design of satellite networks based on VHTS imposes the analysis of multiple trade-offs to achieve an optimal solution in terms of cost, capacity, and the figure of merit of the user terminal. In this paper, we propose a new method for sizing VHTS satellite networks based on an analytical expression of the forward link CINR (Carrier-to-Interference-plus-Noise Ratio) that is used to evaluate the trade-off of different combinations of system parameters. The proposed method considers both technical and commercial requirements as inputs, including the constraints to achieve the optimum solution in terms of the user G/T, the number of beams, and the system cost. The cost model includes both satellite and ground segments. Exemplary results are presented with feeder links using Q/V bands, DVB-S2X and transmission methods based on CCM and VCM (Constant and Variable Coding and Modulation, respectively) in two scenarios with different service areas. View Full-Text
Keywords: CCM; CINR; cost per Gbps in orbit; multibeam satellite communications; system optimization; VCM; VHTS CCM; CINR; cost per Gbps in orbit; multibeam satellite communications; system optimization; VCM; VHTS
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Ortiz-Gomez, F.G.; Martínez, R.; Salas-Natera, M.A.; Cornejo, A.; Landeros-Ayala, S. Forward Link Optimization for the Design of VHTS Satellite Networks. Electronics 2020, 9, 473.

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